CMake: Remove nuget from the build system

Nuget was used to get Python and gettext if they weren't found at build
time on Windows. However, these dependencies should be installed
manually by builders wherever possible. If gettext is not found, our own
msgfmt.py script will be used instead.

Signed-off-by: Avery King <avery98@pm.me>

CMakeLists.txt

@@ -528,9 +528,6 @@ endif()
 find_package( Python3 )
 if( Python3_FOUND )
    set( PYTHON "${Python3_EXECUTABLE}" )
-elseif( CMAKE_SYSTEM_NAME MATCHES "Windows" )
-   nuget_package( pkgdir "python3" "3.7.7" )
-   file( TO_NATIVE_PATH "${pkgdir}/tools/python.exe" PYTHON )
 endif()
 
 find_package(JsonCpp REQUIRED)

cmake-proxies/cmake-modules/TenacityFunctions.cmake

@@ -137,63 +137,6 @@ function( cmd_option name desc )
    set( ${name} "${${name}}" PARENT_SCOPE )
 endfunction()
 
-# Downloads NuGet packages
-#
-# Why this is needed...
-#
-# To get NuGet to work, you have to add the VS_PACKAGE_REFERENCES
-# property to a target. This target must NOT be a UTILITY target,
-# which is what we use to compile the message catalogs and assemble
-# the manual. We could add that property to the Audacity target and
-# CMake would add the required nodes to the VS project. And when the
-# Audacity target is built, the NuGet packages would get automatically
-# downloaded. This also means that the locale and manual targets
-# must be dependent on the Audacity target so the packages would get
-# downloaded before they execute. This would be handled by the CMake
-# provided ALL_BUILD target which is, by default, set as the startup
-# project in Visual Studio. Sweet right? Well, not quite...
-#
-# We want the Audacity target to be the startup project to provide
-# easier debugging. But, if we do that, the ALL_BUILD target is no
-# longer "in control" and any dependents of the Audacity target would
-# not get built. So, targets like "nyquist" and "plug-ins" would have
-# to be manually built. This is not what we want since Nyquist would
-# not be available during Audacity debugging because the Nyquist runtime
-# would not be copied into the destination folder alonside the Audacity
-# executable.
-#
-# To remedy this conundrum, we simply download the NuGet packages
-# ourselves and make the Audacity target dependent on the targets
-# mentioned above. This ensures that the dest folder is populated
-# and laid out like Audacity expects.
-#
-function( nuget_package dir name version )
-   # Generate the full package directory name
-   set( pkgdir "${CMAKE_BINARY_DIR}/packages/${name}/${version}" )
-
-   # Don't download it again if the package directory already exists
-   if( NOT EXISTS "${pkgdir}" )
-      set( pkgurl "https://www.nuget.org/api/v2/package/${name}/${version}" )
-
-      # Create the package directory
-      file( MAKE_DIRECTORY "${pkgdir}" )
-
-      # And download the package into the package directory
-      file( DOWNLOAD "${pkgurl}" "${pkgdir}/package.zip" )
-
-      # Extract the contents of the package into the package directory
-      execute_process(
-         COMMAND
-            ${CMAKE_COMMAND} -E tar x "${pkgdir}/package.zip"
-         WORKING_DIRECTORY
-            ${pkgdir}
-      )
-   endif()
-
-   # Return the package directory name to the caller
-   set( ${dir} "${pkgdir}" PARENT_SCOPE )
-endfunction()
-
 # Determines if the linker supports the "-platform_version" argument
 # on macOS.
 macro( check_for_platform_version )

locale/CMakeLists.txt

@@ -17,9 +17,6 @@ if( GETTEXT_FOUND )
    set( msgfmt "${GETTEXT_MSGFMT_EXECUTABLE}" )
 elseif( PYTHON )
    set( msgfmt "${PYTHON}" "${TARGET_ROOT}/msgfmt.py" )
-elseif( CMAKE_SYSTEM_NAME MATCHES "Windows" )
-   nuget_package( pkgdir "Gettext.Tools" "0.20.1.1" )
-   file( TO_NATIVE_PATH "${pkgdir}/tools/bin/msgfmt.exe" msgfmt )
 endif()
 
 if( NOT DEFINED msgfmt )